JP3122031B2 - Cutting equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutting device for cutting a base material such as a paperboard or an iron plate.

[0002]

2. Description of the Related Art In a cutting apparatus for cutting a base material such as a paperboard or an iron plate by engaging an upper blade and a lower blade, generally,
In order to prevent the upper blade and the lower blade, which are metal blades, from coming into contact with each other and chipping, a gap is set between both blades at the time of engagement.

[0003]

However, as described above, if there is a gap between the upper blade and the lower blade at the time of engagement, the sharpness deteriorates and chips (paper powder) are easily generated. .

[0004] For example, when the base material is a thermal paper, the cut portion is rubbed and the color is formed due to the poor sharpness.
Further, when the base material is X-ray paper, the sharpness becomes poor and the photosensitive agent peels off. Furthermore, when the base material is an adhesive paper coated with an adhesive, the base material and the adhesive form a lump and adhere to the upper blade or the lower blade, and then the lump falls off,
It adheres between a plurality of sheets of paper before and after cutting.

An object of the present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to provide a cutting device capable of improving the sharpness of a substrate and preventing the generation of chips and the like.

[0006]

According to a first aspect of the present invention, there is provided a cutting apparatus for cutting a base material by engaging a pair of blades. Contact pressure applying means for applying a contact pressure that allows the blade to come into contact with the other blade at the time of cutting is installed, and the end of the other blade is in contact with the one blade at the time of non-cutting, and at the time of cutting, guiding guide surface portion so as to contact the blade to the other blade is provided, contact pressure by the contact pressure applying means
Is applied to the surface to which the contact pressure is applied.
The opposite surface is supported by the backup part
It is.

[0007]

The first aspect of the present invention has the following operation. Since one of the blades is provided with a contact pressure by the contact pressure applying means and can be brought into contact with the other blade, the cutting of the base material by these blades is performed under the contact state of these blades. . For this reason, the sharpness of the base material can be improved, and the generation of chips generated when the two blades have a gap and cut the base material can be prevented.

Further, since the other blade is provided with a guide surface portion for guiding the one blade to contact the other blade at the time of cutting, the contact state of both blades can be guided well by the guide surface portion. In addition, chipping of both blades can be prevented.

When both blades are held by drums rotating in opposite directions, respectively, the cutting blade receives cutting resistance in the thickness direction of the blade when cutting the base material, but one of the blades receives the cutting resistance. , Supported by the backup department,
Due to the cutting resistance, no deformation occurs, and interference with the other blade is reliably prevented.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a partially cutaway front view of a swing type cutting machine to which a first embodiment of a cutting device according to the present invention is applied. FIG. 2 is an enlarged front view showing a part of FIG. FIG. 3 is a front view showing a part of FIG. 2 in a further enlarged manner. FIG. 4 is a view taken in the direction of the arrow IV in FIG. FIG. 5 is a front view corresponding to FIG. 3 and showing a modification of the guide surface portion. 6A is a view taken in the direction of the arrow VIA in FIG. 5, and FIG. 6B is a perspective view showing the lower blade in FIG. FIG. 7 is a sectional view showing a rotary type cutting machine to which the second embodiment of the cutting device according to the present invention is applied. FIG. 8 is an enlarged sectional view showing a part of FIG.

The swing type cutting device 10 shown in FIG.
It has a lower blade holder 13 for holding the lower blade 11 and an upper blade holder 14 for holding the upper blade 12, and the lower blade 11 and the upper blade 12 are engaged with each other to form a base material 15 (paperboard, iron plate, or the like). Disconnect. The lower blade 11 is made of, for example, a cemented carbide, and the upper blade 12 is made of, for example, tool steel.

The lower blade holder 13 is a lower blade holder block 1.
6 and a lower blade holder plate 17 fixed to the lower blade holder block 16. The lower blade 11 is fixed to the lower blade holder plate 17 with bolts 18 or the like. Also,
The lower blade holder block 16 is supported by the machine base 19 so as to be able to move laterally along the transport direction of the base material 15.

On the other hand, the upper blade holder 14 includes an upper blade holder block 20, an upper blade holder plate 21 fixed to the upper blade holder block 20, and an upper blade holder plate 2.
A first upper blade holder piece 22 and a second upper blade holder piece 23 fixed to the first and second upper blade holder pieces 22 and 23 are provided.

The upper blade holder block 20 is provided movably in a vertical direction orthogonal to the direction of transport of the base material 15 along a guide rod 24 erected on the lower blade holder block 16. Further, as shown in FIG. 2, the upper blade 12 is pressed and held by the second upper blade holder piece 23 by a holding bolt 25 screwed on the first upper blade holder piece 22. A plurality of the holding bolts 25 are provided along the longitudinal direction of the upper blade 12. Further, a contact pressure is applied to the upper blade 12 by a contact pressure applying plunger 26 described later.

In the above-described cutting apparatus 10, when the drive source is operated, the lower blade holder 13 moves laterally along the direction of transport of the base material 15, and the upper blade holder 14 moves in a circular motion (base material 15).
(The horizontal movement synchronized with the vertical movement and the vertical movement perpendicular to the base material 15)
Then, the upper blade 12 of the upper blade holder 14 moves up and down relatively to the lower blade 11 of the lower blade holder 13 to cut the substrate 15.

The first upper blade holder piece 22 is screwed with a contact pressure applying plunger 26 as contact pressure applying means. The contact pressure applying plunger 26 is prevented from being rotated by a lock nut 27. You. A plurality of contact pressure applying plungers 26 are provided along the longitudinal direction of the upper blade 12, and a coil spring 30 is interposed between a center piece 28 and a back cap 29 as shown in FIG. The repulsive force of the coil spring 30 in the contact pressure applying plunger 26 acts on the upper blade 12 via the center piece 28.

As shown in FIG. 2 and FIG.
At one end, a blade edge introducing portion 32 as a guide surface portion having a guide surface 31 is installed. The guide surface 31 is a surface that is continuous with the lower blade edge 33 of the lower blade 11 and that is inclined along the transport direction of the base material 15. Guide 11 to contact.

The contact pressure at which the upper blade 12 acts on the lower blade 11 is
It is set by the repulsive force of the coil spring 30 by the contact pressure applying plunger 26 and the lateral movement amount S of the upper blade 12 at the time of cutting shown in FIG. The lateral movement amount S is determined by the difference between the position where the upper blade 12 is in contact with the guide surface 31 of the cutting edge introducing portion 32 and the lower blade edge 33 of the lower blade 11 during non-cutting.
This is a dimension along the transport direction of the substrate 15.

In the cutting apparatus 10 as described above, the upper blade edge 34 of the upper blade 12 is arranged obliquely with respect to the lower blade edge 33 of the lower blade 11 as shown in FIG. The upper blade 12 and the lower blade 11 gradually contact in the longitudinal direction of both blades under the action of the contact pressure, and cut the substrate 15.

Further, the upper blade 12 may be worn due to wear of the upper blade 12 or the like.
When the lateral movement amount S is insufficient, the repulsive force of the coil spring 30 in the contact pressure applying plunger 26 is increased, and the upper blade 12 is moved to the guide surface 3 of the blade introduction portion 31.
1 and the lateral movement amount S is adjusted to an appropriate value to ensure a good contact pressure between the upper blade 12 and the lower blade 11.

According to the above embodiment, the upper blade 12 can be brought into contact with the lower blade 11 by applying the contact pressure by the contact pressure applying plunger 26 and the above-mentioned lateral movement amount S. The cutting of the base material 15 by the blade 12 and the lower blade 11 is performed in a state where the upper blade 12 and the lower blade 11 are in contact with each other. For this reason, the sharpness of the base material 15 can be improved, and the generation of chips generated when the base material is cut with a gap between the upper blade 12 and the lower blade 11 can be prevented.

For example, since the sharpness of the base material 15 is good, when the base material 15 is heat-sensitive paper, the heat-sensitive paper does not develop color. The photosensitive agent applied to the paper does not peel. Also,
Since the generation of chips can be prevented, when the base material 15 is an adhesive paper, a lump in which the paper powder as the chips and the adhesive are bonded adheres to the upper blade 12 or the lower blade 11 and falls off, before and after cutting. It does not adhere to adhesive paper.

Since the lower blade 11 is provided with a blade edge introducing portion 32 having a guide surface 31 for guiding the upper blade 12 to contact the lower blade 11 during cutting, the upper blade 12 and the lower blade 11 are provided. Can be satisfactorily guided by the guide surface 31 of the blade tip introducing portion 32, and the chipping of the upper blade 12 and the lower blade 11 can be prevented.

In the first embodiment described above, the blade edge introducing portion 32 having the guide surface 31 is installed at one end of the lower blade 11, but as shown in FIGS. 5 and 6, A guide surface 35 as a guide surface may be formed at one end of the lower blade 11. The guide surface 35 is formed at one end of the lower blade 11 so as to be obliquely inclined in the front view of FIG. 5 and the plan view of FIG. 6A, and is formed above the guide surface 35 in FIG. The blade 12 is brought into contact with the upper blade 12 during cutting.
Is brought into contact with a portion of the lower blade 11 outside the guide surface 35. In the case of the guide surface 35 as well, chipping between the upper blade 12 and the lower blade 11 can be prevented as in the above-described embodiment.

Next, a second embodiment will be described with reference to FIGS.
This will be described with reference to FIG. In the second embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.

A rotary type cutting device 4 shown in FIG.
Reference numeral 0 denotes a pair of upper and lower fixed support shafts 41, 42, on which hollow drums 43, 44 are rotatably supported in opposite directions, respectively, and seating surfaces 45, 46 on the outer peripheral portions of these hollow drums 43, 44. An upper blade 47 and a lower blade 48 are respectively disposed, and when the hollow drums 43 and 44 rotate, the upper blade 47 and the lower blade 48 mesh with each other to cut the substrate 15.

The lower blade 48 is made of cemented carbide and the upper blade 47 is made of tool steel. In addition, the lower blade 48 has a plurality of portions along the longitudinal direction, the seating surfaces 46 of the hollow drum 48.
Is fixed using a bolt 49.

The hollow drum 43 includes a first upper blade holder piece 51 and a second upper blade holder piece 52.
The holding plunger 53 and the contact pressure applying plunger 26 are mounted on the first upper blade holder piece 51. The first upper blade holder piece 52 is formed with a backup portion 50 integrally with the second upper blade holder piece 52. The holding plunger 53 includes a groove 54 of the upper blade 47.
And the upper blade 47 is fixed to the second upper blade holder piece 52.
And hold it detachably. Further, the contact pressure applying plunger 26 applies a contact pressure to the upper blade 47 pressed and held by the second upper blade holder piece 52 by the holding plunger 53, and the back surface of the upper blade 47, that is, the upper blade 47 The surface opposite to the surface to which the contact pressure has been applied is the backup unit 50
And abut it.

In this cutting device 40 as well, a cutting edge introducing portion 32 having a guide surface 31 is provided at one end of a lower blade 48, or a guide surface 35 is formed, and a contact pressure applying plunger 26 is further provided. Therefore, the upper blade 4 of the contact pressure applying plunger 26 by the coil spring 30
7 and the amount of lateral movement S when the upper blade 47 moves along the guide surface 31 or the guide surface 35 of the blade tip introducing portion 32 at the time of cutting, the upper blade 47 becomes the lower blade 4 at the time of cutting.
A contact pressure is applied to the substrate 8, and the substrate 15 is cut in this state. Therefore, also in this case, the sharpness of the base material 15 can be improved, and the generation of chips can be prevented.
And the lower blade 48 can be prevented from being chipped.

Further, the upper blade 47 is provided with the contact pressure applying plunger 2.
6 is supported by the back-up portion 50 under the action of the repulsive force of the coil spring 30 of FIG.
Even if the upper blade 47 receives cutting resistance in the thickness direction of the lower blade 48 (the same direction as the transport direction of the base material 15), the upper blade 47
Is supported in contact with the backup portion 50, so that it is not deformed by the cutting resistance force, and the interference between the upper blade 47 and the lower blade 48 can be reliably prevented.

[0032]

As described above, according to the cutting apparatus of the present invention, the sharpness of the base material can be improved, and the generation of chips and the like can be prevented.

[Brief description of the drawings]

FIG. 1 is a front view, partially cut away, of an oscillating type cutting machine to which a first embodiment of a cutting device according to the present invention is applied.

FIG. 2 is an enlarged front view showing a part of FIG. 1;

FIG. 3 is a front view showing a part of FIG. 2 in a further enlarged manner.

FIG. 4 is a view taken in the direction of the arrow IV in FIG. 2;

FIG. 5 is a front view corresponding to FIG. 3 and showing a modification of the guide surface portion.

6 (A) is a view taken along the arrow VIA in FIG. 5, and FIG.
(B) is a perspective view showing a lower blade of FIG. 5.

FIG. 7 is a sectional view showing a rotary type cutting machine to which a second embodiment of the cutting device according to the present invention is applied.

FIG. 8 is an enlarged sectional view showing a part of FIG. 7;

[Explanation of symbols]

 Reference Signs List 10 cutting device 11 lower blade 12 upper blade 15 base material 22 first upper blade holder piece 26 contact pressure applying plunger 31 guide surface 32 blade tip introducing portion 35 guide surface 40 cutting device 47 upper blade 48 lower blade 50 backup unit S lateral movement amount

Claims (1)

(57) [Claims] 1. A cutting device for cutting a base material by engaging a pair of blades, wherein a holder for holding one of the blades is used when cutting one of the blades.
Contact pressure applying means for applying a contact pressure enabling contact with the other blade is installed, and the end of the other blade is in contact with the one blade when not cutting, and the one blade is cut when cutting. A guide surface portion for guiding the other blade to come into contact with the other blade is provided , and one of the blades to which a contact pressure is applied by the contact pressure applying means.
The surface opposite to the surface to which the contact pressure is applied
A cutting device characterized in that the cutting device is abutted and supported by a stopper.